>>72325271Try using picrews to get a base idea down. They won't always look the best and are limited, but that's expected of picrews. Just use them for playing around and seeing what works.
Also try not to worry about "copying" someone else. Most people won't notice or care as long as you don't look exactly like that person.
Here's where you can play around with picrews and two I know of that might fit your vibe.
https://picrew.me/enhttps://picrew.me/en/image_maker/2319535https://picrew.me/en/image_maker/2158832Since you posted a Girls' Frontline pic I'm assuming you already checked out those designs. That and Arknights might be good inspiration, but it seems like you're on that track already.